package com.lyh.seckill.config;
import com.lyh.seckill.pojo.User;
import com.lyh.seckill.service.IUserService;
import com.lyh.seckill.utils.CookieUtil;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.core.MethodParameter;
import org.springframework.stereotype.Component;
import org.springframework.util.StringUtils;
import org.springframework.web.bind.support.WebDataBinderFactory;
import org.springframework.web.context.request.NativeWebRequest;
import org.springframework.web.method.support.HandlerMethodArgumentResolver;
import org.springframework.web.method.support.ModelAndViewContainer;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
/**
 * @author zhoubin
 * @since 1.0.0
 */
@Component
public class UserArgumentResolver implements HandlerMethodArgumentResolver {
	@Autowired
	private IUserService userService;
	@Override
	public boolean supportsParameter(MethodParameter parameter) {
		Class<?> clazz = parameter.getParameterType();
		return clazz == User.class;
	}
	@Override
	public Object resolveArgument(MethodParameter parameter, ModelAndViewContainer
			mavContainer,
								  NativeWebRequest webRequest, WebDataBinderFactory
										  binderFactory) throws Exception {
		HttpServletRequest request =
				webRequest.getNativeRequest(HttpServletRequest.class);
		HttpServletResponse response =
				webRequest.getNativeResponse(HttpServletResponse.class);
		String ticket = CookieUtil.getCookieValue(request, "userTicket");
		if (StringUtils.isEmpty(ticket)) {
			return null;
		}
		return userService.getUserByCookie(ticket, request, response);
	}
}